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This article is cited in 10 scientific papers (total in 10 papers)
OPTICS AND NUCLEAR PHYSICS
Femtosecond laser irradiation of a multilayer metal–metal nanostructure
S. A. Romashevskiya, V. A. Khokhlovb, S. I. Ashitkova, V. V. Zhakhovskyac, N. A. Inogamovabc, P. S. Komarova, A. N. Parshikovac, Yu. V. Petrovbd, E. V. Strulevaa, P. A. Tsygankove a Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412 Russia
b Landau Institute for Theoretical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432 Russia
c All-Russia Research Institute of Automatics, Moscow, 127055 Russia
d Moscow Institute of Physics and Technology (National Research University), Dolgoprudnyi, Moscow region, 141701 Russia
e Universidad Industrial de Santander, 680003 Bucaramanga, Colombia
Abstract:
The selective modification of upper layers of a Ni/Al multilayer nanostructure irradiated by a single femtosecond laser pulse has been studied. The analysis of surface topography indicates that either partial or complete removal of two upper layers is possible depending on the absorbed energy. The surface has been scanned by an atomic force microscope. The numerical simulation of the phenomenon with a two-temperature hydrodynamic code has revealed an asynchronous dynamics of the electron subsystems of Ni and Al and an inhomogeneous heating of ion subsystems. As a result, a complex combination of compression and rarefaction waves is initiated in the multilayer target. It has been shown numerically that, as the absorbed energy increases, the first nickel layer is initially ruptured because of the localization of tensile stresses. The experimental and numerical thicknesses of the separated layer and the threshold energy are in agreement with each other. Consequently, the parameters of two-temperature models of nickel and aluminum are selected correctly.
Received: 26.11.2020 Revised: 24.01.2021 Accepted: 25.01.2021
Citation:
S. A. Romashevskiy, V. A. Khokhlov, S. I. Ashitkov, V. V. Zhakhovsky, N. A. Inogamov, P. S. Komarov, A. N. Parshikov, Yu. V. Petrov, E. V. Struleva, P. A. Tsygankov, “Femtosecond laser irradiation of a multilayer metal–metal nanostructure”, Pis'ma v Zh. Èksper. Teoret. Fiz., 113:5 (2021), 311–319; JETP Letters, 113:5 (2021), 308–316
Linking options:
https://www.mathnet.ru/eng/jetpl6376 https://www.mathnet.ru/eng/jetpl/v113/i5/p311
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